SAGITTA EVL R Stem

The SAGITTA EVL R stem is an anatomical femoral implant for revision surgery designed for prosthesis revision with or without a femoral flap. The stem is destined to a cementless fixation and its fixation is ensured by the HA coating.

The stem is anatomical to match the curvature of the femur and is available for right and left THA revisions. It is available in three lengths (180, 250 and 325 mm) with up to 5 diameters per size (12, 13, 14, 15 & 16).

Distal locking is provided by two locking screws, ensuring primery vertical and rotational stability.

Category:

Characteristics and Materials

Charactéristics:

  • The SAGITTA EVL R stem has oval metaphyseal filling to ensure primary anchoring
  • Anatomical stem available in right and left side versions
  • CCD angle: 133°
  • Two holes in the distal portion to accommodate two distal locking screws. The locking screws have a 5 mm diameter and are available in lengths of 25 to 65 mm
  • The stem collar has a 11/13 (5°43’’) taper which needs to be used with SERF “SI” or “SD” heads with the same 11/13 taper

Materials:

  • The SAGITTA EVL R stem is made from titanium alloy (TA6V) with an HA coating,
  • The pins are also made from titanium alloy (TA6V),
  • Femoral heads: “SI” made from stainless steel and “SD” made from Biolox® delta ceramic.

Instrumentation

A general kit and an additional tray according to the operated side are required to insert the SAGITTA EVL R stem.

Indications

Indications:

The SAGITTA EVL R implant is recommended for indications according to SOFCOT stage I to VI, Paprosky type I to VI and AAOS type Ia to Ic bone classifications.

This prosthesis may be combined with two distal locking pins in the case of femorotomy, trochanterotomy, endofemoral approach, bone flaps and windows.

Contraindications:

  • Acute or chronic local or systemic infection (cardiopathy, decompensated diabetes, continuous hemodialysis, reduced immune response, etc.).
  • Severe muscular, neurological or vascular deficiencies affecting the extremity concerned.
  • Bone destruction or loss, or poor bone quality likely to affect implant stability, severe osteoporosis, major deformity of the joint to be replaced, local bone tumors.
  • All related conditions which could compromise the function or implanting of the prosthesis.
  • Systemic or metabolic disorders.
  • Mental incapacity of patients to understand the surgeon’s instructions.
  • Drug addiction, alcohol, tobacco or medicine abuse.
  • Local bone tumors.
  • Obesity, excess weight, high level of physical activity, intense exercise, after a fall.

Surgical Technique